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Powder metallurgy composite lubricant and preparation method thereof

A powder metallurgy and lubricant technology, applied in the field of powder metallurgy composite lubricant and its preparation, to achieve the effect of improving pressing performance and reducing volatilization

Inactive Publication Date: 2013-02-27
曾锐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to reduce the amount of sintering volatiles produced by zinc stearate materials in the process of high-temperature sintering in the pressing of powder metallurgy parts, and to reduce the problem of lubricants leaving harmful residues in the sintering furnace, the invention provides a powder metallurgy composite Type lubricant and preparation method thereof

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0013] A powder metallurgy composite lubricant is mainly composed of stearic acid amide and zinc stearate, 25 parts of stearic acid amide and 15 parts of zinc stearate. The process is to use a high-temperature sealed furnace. Amide and zinc stearate are added into a high-temperature sealed furnace according to a certain proportion, heated to 142.8-143.6°C, the two raw materials are melted into liquid, mixed evenly by stirring, and then ground and crushed at low temperature, and the particle size is crushed to -325 mesh Into powder filtration finished product.

Embodiment 2

[0015] A powder metallurgy composite lubricant is mainly composed of stearic acid amide and zinc stearate, 35 parts of stearic acid amide and 20 parts of zinc stearate. The process is to use a high-temperature sealed furnace. Amide and zinc stearate are added into a high-temperature sealed furnace according to a certain proportion, heated to 142.8-143.6°C, the two raw materials are melted into liquid, mixed evenly by stirring, and then ground and crushed at low temperature, and the particle size is crushed to -325 mesh Into powder filtration finished product.

Embodiment 3

[0017] A powder metallurgy composite lubricant is mainly composed of stearic acid amide and zinc stearate, 45 parts of stearic acid amide and 25 parts of zinc stearate. The process is to use a high-temperature sealed furnace. Amide and zinc stearate are added into a high-temperature sealed furnace according to a certain proportion, heated to 142.8-143.6°C, the two raw materials are melted into liquid, mixed evenly by stirring, and then ground and crushed at low temperature, and the particle size is crushed to -325 mesh Into powder filtration finished product.

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Abstract

Provided is a powder metallurgy composite lubricant and a preparation method thereof. The lubricant is composed of 20-80 parts of octadecanamide and 10-60 parts of zinc stearate. The process includes: firstly adding the octadecanamide and the zinc stearate with certain proportion into a high-temperature sealing furnace, heating the mixture to the temperature of 142.8-143.6 DEG C until the raw materials are melted into liquid, then evenly mixing through stirring, grinding and smashing at low temperature to enable the particle degree to be -325 meshes, smashing the particles into powder, filtering to obtain finished products.

Description

Technical field [0001] The invention relates to the field of lubricating materials, in particular to a powder metallurgy composite lubricant used in industry and a preparation method thereof. Background technique [0002] As we all know, during the pressing and demoulding process of powder metallurgy mechanical parts, the friction between the green compact and the mold (die, mandrel and die punch) is very large, and a lubricant must be added to the powder to reduce it. It is mainly suitable for pressing and lubricating parts with low and medium density. In addition to reducing friction, it can also reduce component segregation. [0003] At present, zinc stearate is mainly used in the pressing of powder metallurgy parts in China. Zinc stearate will obviously produce sintering volatiles during high-temperature sintering, and zinc oxide will remain in the furnace tube, causing the furnace tube to be easily scrapped and damaged. And the reduction of service life, sintering blac...

Claims

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Application Information

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IPC IPC(8): C10M105/00B22F1/00C10N40/24
Inventor 曾锐
Owner 曾锐
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